The Greek yogurt with the fruity spicy Spanish olive oil (additional cracked black pepper on the top) was the best. This was Spanish olive oil we got on our recent trip the Pennsylvania. I served this with flat bread crackers with sesame seeds.
The combination of yogurt and olive oil was a surprise. The yogurt seemed to absorb and accentuate the fruity grassy and peppery flavor of the olive oil. It made a wonderful spread. It tasted great either spread over the cucumber or cracker. We had noticed before how yogurt absorbed and accentuated the taste of mayonnaise when we mixed the two together as dressing for potato or cucumber salad. Using this combination we were able to get an intense mayonnaise flavor while using just a small amount. This same characteristic seems to have extended to the combination of yogurt and olive oil and it was a great discovery that we shall exploit extensively. We were drinking red wine for sure but were so blown away by the yogurt/olive oil we cannot remember exactly what it was.